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alekssr [168]
3 years ago
6

According to what you have learned about the circulatory and respiratory systems, explain how and why your heart changed its rat

e?
Biology
1 answer:
maks197457 [2]3 years ago
3 0

Answer:

Your heart changes its rate depending on the activity, so that it can carry blood to your muscles, and therefore it needs to beat stronger if you are performing some exercise, or not so strong if you are sleeping, for example.

Explanation:

Your heart is continuously beating to keep blood circulating throughout your body.

So, here it is why your heart changes its rate: Its rate changes depending on your activity level; it is lower while you are asleep and at rest and higher while you exercise to supply your muscles with enough freshly oxygenated blood to keep the functioning at a high level.

And how: depending on your activity level, your heart has to pump enough blood to your muscles. Blood carries needed oxygen and other nutrients. Muscles need more blood sugar than any other tissue especially when working hard. To supply your muscles with oxygen your heart needs to beat faster, and this builds up your heart muscles.

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Karo-lina-s [1.5K]

Answer:

abdomen

Explanation:

most internal organs in an insect are located in the abdomen. The insect has three body  segments which are the head, thorax and abdomen. The abdomen of an insect contains the heart, reproductive organs, mid-gut and digestive organs and that is why it is said that most internal organs in an insect are located in the abdomen.

the main functions of the insect abdomen are

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3 years ago
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Answer: V(t)=5000(9/10)^t

Explanation:

If the car loses 1/10 of its value each year, that means 9/10 of the value remains each year.

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If we start with the initial value, $5000 and keep multiplying by 9/10 his function gives us the car's value t years from now:

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3 years ago
You have a dna sequence that codes for a protein and is 105 nucleotides long
kakasveta [241]
If you have a DNA sequence that codes for a protein and is 105 nucleotides long, and a frameshift mutation occurs at the 85th base there will be 84/3 <span> amino acids that will be correct in this </span><span>protein </span>because it occurs on the 85th, and there's three per codon. Hope this answers the question. Have a nice day.
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3 years ago
Which organism would you expect to find at level D?
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Aneli [31]

Answer:

cells lose their ability to maintain their sodium-potassium pumps, and eventually, they die.

Explanation:

If glycolysis is interrupted, these cells lose their ability to maintain their sodium-potassium pumps, and eventually, they die. The last step in glycolysis will not occur if pyruvate kinase, the enzyme that catalyzes the formation of pyruvate, is not available in sufficient quantities

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